<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>3.标题标签.html</title>
</head>
<body>
	
	<!-- 标题标签 -->
	<p1>这是一个P标签</p1>
	<h1 align="right">标题</h1>
	<h2 align="left">标题</h2>
	<h3 align="center">标题</h3>

	
</body>
</html>